瓦立达截尾螺

At the Cheyenne Mountain Zoo, an infant gorilla named Wumundi gets some tender loving care from a dedicated keeper and lots of attention from curious visitors. He is on with a keeper all the time 24 hours a day. Zoo spokesman Sean Anglum explains tha

发表于:2018-12-03 / 阅读(69) / 评论(0) 分类 自然百科2008年

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发表于:2018-12-04 / 阅读(33) / 评论(0) 分类 单词解析速记

JUDY WOODRUFF: Its one of those times of the year when high school juniors aiming for college are getting ready to take the SAT or the ACT, but a large new study is challenging the value of these well-known standardized tests. Researchers looked at 3

发表于:2019-01-27 / 阅读(34) / 评论(0) 分类 PBS访谈教育系列

GWEN IFILL: Now we turn back to Prime Minister Netanyahu's speech to Congress, the threat of Iran, and what, if anything, makes for a good nuclear deal. I'm joined by two foreign policy veterans. Stephen Hadley was national security adviser for Presi

发表于:2019-02-17 / 阅读(46) / 评论(0) 分类 PBS访谈社会系列

GWEN IFILL: We return now to the fight against the Islamic State group in Syria. As we reported, Russian President Vladimir Putin ordered Russian military forces to cooperate with the French military, as both countries bombed targets in Syria today.

发表于:2019-02-25 / 阅读(56) / 评论(0) 分类 PBS访谈社会系列

本文为大家准备了GRE词根词汇:ev,便于考生GRE备考。 ev = age 年龄,寿命,时代,时期 471. longevity〔 long 长,ev 年龄,寿命,-ity 名词后缀」长寿,长命472. longevous〔 long 长, ev 寿命,-ous 形容

发表于:2019-02-25 / 阅读(95) / 评论(0) 分类 GRE英语